CN2874014Y - Water injection pipe string bottom valve - Google Patents
Water injection pipe string bottom valve Download PDFInfo
- Publication number
- CN2874014Y CN2874014Y CN 200620080856 CN200620080856U CN2874014Y CN 2874014 Y CN2874014 Y CN 2874014Y CN 200620080856 CN200620080856 CN 200620080856 CN 200620080856 U CN200620080856 U CN 200620080856U CN 2874014 Y CN2874014 Y CN 2874014Y
- Authority
- CN
- China
- Prior art keywords
- water injection
- valve seat
- injection string
- cross
- seating nipple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a foot valve of a water-injection pipe column, which comprises an upper joint, an adjusting screw, a sealing ring, a cross, an upper disk, a lower disk, an outer spring, an inner spring, a dampening cap, a work cylinder, a steel ball, a valve seat and a lower joint. The utility model is characterized in that the foot valve of the water-injection pipe column is cylindrical. The upper end of the work cylinder is provided with female threads, the lower end with male threads, and they are connected with the upper joint and lower joint respectively. In the work cylinder, from up to down in sequence the adjusting screw, the cross, the upper disk, a helical spring, the lower disk, the steel ball and the valve seat are arranged. The cross is seated on the circular step at upper part in the work cylinder, is pressed tightly by the upper joint, and its center is provided with a threaded hole. The valve seat is seated on the circular step in the middle of the lower joint, limited by the lower end of the work cylinder. The adjusting screw matches with the threaded hole of the cross and presses in sequence the upper disk, the helical spring, the lower disk, the steel ball and the valve seat. The valve is reliably sealed, with adjustable sealing pressure, opening at fixed pressure, resistant to return sand, resistant to crossing of layers and preventing failure in the packer.
Description
One, technical field
The utility model relates to the oil field and annotate the water injection string bottom valve that poly-follow-up water drive is used on water injection well.
Two, background technology
At present, the bottom valve existing problems that notes poly-follow-up water drive in oil field is used on water injection well are a lot, mainly show in the injecting process to be not closed completely, to produce when stopping annotating backflow.Thereby cause that packer lost efficacy, layer string, the phenomenon of shaking out be very serious, the well rate of lying height; Adverse current is bigger in engineering and the monitoring results construction, and environmental pollution phenomenon is serious.Because the most of injection region piece in oil field successively enters follow-up water drive, follow-up pool is owing to the redistribution of pressure field, and new variation has dynamically taken place block, and interlayer contradiction has had new characteristics, and former bottom valve has seriously restricted the demand of seperated layer water injection.This just requires innovation to some extent on water injection technology, to satisfy the needs of oil field development.
Three, summary of the invention
The purpose of this utility model provides a kind of water injection string bottom valve, solves the problem that above-mentioned bottom valve exists, and satisfies the requirement that poly-follow-up water drive seperated layer water injection is annotated in the oil field.
The technical solution of the utility model realizes in the following manner:
The utility model is made up of top connection, adjusting screw(rod), sealing ring, cross, last dish, lower wall, outer spring, inner spring, damper cap, seating nipple, steel ball, valve seat and lower contact, it is cylindrical to it is characterized in that the water injection string bottom valve is made as, the seating nipple upper end is provided with box thread, the bottom is provided with male thread, be threaded with top connection and lower contact separately, in seating nipple from top to bottom by preface be provided with the adjusting screw(rod) of seating nipple concentric, cross, on dish, helical spring, lower wall, steel ball and valve seat; Cross is sitting on the set ring-shaped step in the interior middle and upper part of seating nipple, is compressed by top connection, and its center is provided with screwed hole; Valve seat is sitting on the set annular table in middle part in the lower contact, and is spacing by the seating nipple lower end, and adjusting screw(rod) cooperates with the cross screwed hole and pursues preface and press dish, helical spring, lower wall, steel ball and valve seat.
Last dish middle and upper part is made as taper shape, and the middle and lower part is made as step from inside week of periphery, and central part is made as cylindrical shape.
Lower wall top is made as cylindrical, diameter is small in the internal diameter of last disk center cylinder, the bottom is from be provided with the ring-shaped step corresponding with the ring-shaped step of last dish in inside week of periphery, its middle part, end is provided with the spill sphere that matches with steel ball, cylindrical center is provided with circular hole, damper cap is equipped with in its upper end, and its lower end week side is provided with the limbers.
Top connection top is provided with box thread, joins with water injection string, and the lower contact bottom is provided with male thread, joins with the water injection string tail pipe.
Be provided with sealing ring in last lower contact and the seating nipple screw thread cooperation place that joins.
Cooperation place in valve seat and lower contact is provided with sealing ring.
Compared with the prior art the utility model has constant pressure turn on and preventing sand returning function, can regulate pressure limit according to the stratum injection threshold pressure, at closing well, stop being in closed condition under the notes state, the formation water oil pipe genetic horizon string that do not reflux, under powerful well-flushing pressure, can carry out high flow rate washover smoothly, in order to improve its application life, adopted hydraulically-damped function, its closing motion is slowly moved.And dismounting is easy to maintenance, the repeat usage height.For preventing packer seat envelope midway, can guarantee that tubing string is in negative pressure state in the process of going into the well, bottom valve has the sand setting passage for preventing the design of sand pipe laying post simultaneously, guarantees that filth is deposited on tail pipe in the well.
Four, description of drawings
Fig. 1-structural representation of the present utility model
1-top connection 2-sealing ring 3-adjusting screw(rod) 4-cross 5-goes up dish 6-external screw thread spring 7-inside spin spring 8-damper cap 9-lower wall 10-seating nipple 11-steel ball 12-sealing ring 13-valve seat 14-lower contact among the figure
Five, the specific embodiment
For further disclosing the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
The utility model by top connection 1, sealing ring 2, adjusting screw(rod) 3, cross 4, on coil 5, external spiral spring 6, inside spin spring 7, damper cap 8, lower wall 9, seating nipple 10, steel ball 11, sealing ring 12, seal receptacle 13 and lower contact 14 form.Valve body is made as cylindrical, and the seating nipple upper end is provided with box thread, and the bottom is provided with male thread, is threaded with top connection and lower contact separately; In seating nipple, be provided with adjusting screw(rod) with the seating nipple concentric by preface from top to bottom, cross, go up dish, helical spring, lower wall, steel ball and valve seat; Cross is sitting on the set ring-shaped step in middle and upper part in the seating nipple, and is spacing by the seating nipple lower end, and adjusting screw(rod) cooperates with the screwed hole of cross and pursues preface and press dish, helical spring, lower wall, steel ball and valve seat.The upper-lower position of adjusting screw(rod) can be regulated the opening pressure of steel ball, prevents to produce when water injection well from stopping annotating to reflux, and causes packer inefficacy, layer string, shakes out; Prevent to produce adverse current in the monitoring results construction, influence monitoring quality.
Claims (6)
1, a kind of water injection string bottom valve, form by top connection, adjusting screw(rod), sealing ring, cross, last dish, lower wall, outer spring, inner spring, damper cap, seating nipple, steel ball, valve seat and lower contact, it is cylindrical to it is characterized in that the water injection string bottom valve is made as, the seating nipple upper end is provided with box thread, the bottom is provided with male thread, be threaded with top connection and lower contact separately, in seating nipple from top to bottom by preface be provided with the adjusting screw(rod) of seating nipple concentric, cross, on dish, helical spring, lower wall, steel ball and valve seat; Cross is sitting on the set ring-shaped step in the interior middle and upper part of seating nipple, is compressed by top connection, and its center is provided with screwed hole; Valve seat is sitting on the set annular table in middle part in the lower contact, and is spacing by the seating nipple lower end, and adjusting screw(rod) cooperates with the cross screwed hole and pursues preface and press dish, helical spring, lower wall, steel ball and valve seat.
2, water injection string bottom valve according to claim 1 is characterized in that the described dish middle and upper part of going up is made as taper shape, and the middle and lower part is made as step from inside week of periphery, and central part is made as cylindrical shape.
3, water injection string bottom valve according to claim 1, it is characterized in that described lower wall top is made as cylindrical, diameter is small in the internal diameter of last disk center cylinder, the bottom is from be provided with the ring-shaped step corresponding with the ring-shaped step of last dish in inside week of periphery, its middle part, end is provided with the spill sphere that matches with steel ball, cylindrical center is provided with circular hole, and damper cap is equipped with in its upper end, and its lower end week side is provided with the limbers.
4, water injection string bottom valve according to claim 1 is characterized in that described top connection top is provided with box thread, joins with water injection string, and the lower contact bottom is provided with male thread, joins with the water injection string tail pipe.
5, water injection string bottom valve according to claim 1 is characterized in that describedly being provided with sealing ring in last lower contact and the seating nipple screw thread cooperation place that joins.
6, water injection string bottom valve according to claim 1 is characterized in that described cooperation place in valve seat and lower contact is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080856 CN2874014Y (en) | 2006-01-26 | 2006-01-26 | Water injection pipe string bottom valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080856 CN2874014Y (en) | 2006-01-26 | 2006-01-26 | Water injection pipe string bottom valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874014Y true CN2874014Y (en) | 2007-02-28 |
Family
ID=37780611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080856 Expired - Fee Related CN2874014Y (en) | 2006-01-26 | 2006-01-26 | Water injection pipe string bottom valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874014Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727775A (en) * | 2015-03-18 | 2015-06-24 | 新疆华隆油田科技股份有限公司 | Adjustable backflow-preventing blanking plug |
| CN105114034A (en) * | 2015-09-15 | 2015-12-02 | 宝鸡金辉石油机械有限公司 | Prearranged downhole switching valve |
| CN108869818A (en) * | 2018-09-12 | 2018-11-23 | 苏州丹顿机电有限公司 | A kind of adjustable check valve of cracking pressure |
| CN109000005A (en) * | 2018-09-12 | 2018-12-14 | 苏州丹顿机电有限公司 | A kind of adjustable check valve of cracking pressure |
| CN110130853A (en) * | 2019-06-12 | 2019-08-16 | 易鲁川 | A kind of water injection well ball-and-seat |
| CN114856489A (en) * | 2022-05-26 | 2022-08-05 | 江西炼石环保科技有限公司 | Skid-mounted profile control high-pressure injection pipe structure |
-
2006
- 2006-01-26 CN CN 200620080856 patent/CN2874014Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727775A (en) * | 2015-03-18 | 2015-06-24 | 新疆华隆油田科技股份有限公司 | Adjustable backflow-preventing blanking plug |
| CN105114034A (en) * | 2015-09-15 | 2015-12-02 | 宝鸡金辉石油机械有限公司 | Prearranged downhole switching valve |
| CN105114034B (en) * | 2015-09-15 | 2017-07-07 | 宝鸡金辉石油机械有限公司 | Presetting system underground switching valve |
| CN108869818A (en) * | 2018-09-12 | 2018-11-23 | 苏州丹顿机电有限公司 | A kind of adjustable check valve of cracking pressure |
| CN109000005A (en) * | 2018-09-12 | 2018-12-14 | 苏州丹顿机电有限公司 | A kind of adjustable check valve of cracking pressure |
| CN108869818B (en) * | 2018-09-12 | 2020-10-27 | 苏州丹顿机电有限公司 | Opening pressure adjustable check valve |
| CN110130853A (en) * | 2019-06-12 | 2019-08-16 | 易鲁川 | A kind of water injection well ball-and-seat |
| CN114856489A (en) * | 2022-05-26 | 2022-08-05 | 江西炼石环保科技有限公司 | Skid-mounted profile control high-pressure injection pipe structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |